213296631 has 4 divisors (see below), whose sum is σ = 284395512. Its totient is φ = 142197752.

The previous prime is 213296591. The next prime is 213296651. The reversal of 213296631 is 136692312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213296631 - 2¹¹ = 213294583 is a prime.

It is a super-2 number, since 2×213296631² = 90990905591900322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213296592 and 213296601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213296651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35549436 + ... + 35549441.

It is an arithmetic number, because the mean of its divisors is an integer number (71098878).

Almost surely, 2^213296631 is an apocalyptic number.

213296631 is a deficient number, since it is larger than the sum of its proper divisors (71098881).

213296631 is an equidigital number, since it uses as much as digits as its factorization.

213296631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71098880.

The product of its digits is 11664, while the sum is 33.

The square root of 213296631 is about 14604.6783942681. The cubic root of 213296631 is about 597.4863646568.

The spelling of 213296631 in words is "two hundred thirteen million, two hundred ninety-six thousand, six hundred thirty-one".